---
product_id: 28281842
title: "Linzer Products 3121-4 4 in. Poly Waterproof Brush"
brand: "linzer"
price: "R$202"
currency: BRL
in_stock: true
category: "Linzer"
url: https://www.desertcart.com.br/products/28281842-linzer-products-3121-4-4-in-poly-waterproof-brush
store_origin: BR
region: Brazil
---

# Polyester bristles optimized for waterproofing 4-inch precision brush width Durable steel ferrule & ergonomic beavertail handle Linzer Products 3121-4 4 in. Poly Waterproof Brush

**Brand:** linzer
**Price:** R$202
**Availability:** ✅ In Stock

## Summary

> 🖌️ Elevate your waterproofing game with pro-grade precision!

## Quick Answers

- **What is this?** Linzer Products 3121-4 4 in. Poly Waterproof Brush by linzer
- **How much does it cost?** R$202 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/28281842-linzer-products-3121-4-4-in-poly-waterproof-brush)

## Best For

- linzer enthusiasts

## Why This Product

- Trusted linzer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Steel ferrule ensures bristle stability and long-term durability
- • **Trusted by Pros:** 4.6-star rating from over 2,000 users—join the community of expert finishers
- • **Precision 4-Inch Brush:** Ideal size for flawless, uniform waterproofing coverage
- • **Waterproofing Specialist:** Polyester flagged bristles engineered for superior stain and sealant application
- • **Ergonomic Burgundy Beavertail:** Comfort grip handle designed for extended use without fatigue

## Overview

The Linzer 3121-4 is a 4-inch waterproofing brush featuring flagged polyester bristles and a burgundy beavertail handle for ergonomic comfort. Designed for uniform application of all waterproofing sealants and stains, it combines durability with precision, backed by a steel ferrule and a strong 4.6-star user rating.

## Description

4", polyester staining and waterproofing brush, Burgundy beavertail handle, chiseled trim, steel ferrule, for all stains and waterproofing products.

## Features

- Specially formulated for uniform coverage with all waterproofing sealants.
- Sable polyester bristles, brown plastic handle.
- Dimension - 11.57 x 10.38 x 4.23
- Item Weight - .33.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQKTUE |
| Best Sellers Rank | #421,157 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #771 in Household Bristle Paint Brushes |
| Brand Name | Linzer |
| Bristle Type | Flagged Bristle |
| Brush Width | 4 inches |
| Color | Brown |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,180) |
| Global Trade Identification Number | 00077089312171, 30077089312172 |
| Handle Type | Beavertail Handle |
| Included Components | Linzer 3121 0400 Stain Waterproofing Brush, 4 in. |
| Item Type Name | Linzer 3121 0400 Stain Waterproofing Brush, 4 in. |
| Item Weight | 9.07 g |
| Manufacturer | Linzer |
| Manufacturer Part Number | 3121 0400 |
| Manufacturer Warranty Description | Warranty. |
| Material Type | Polyester |
| Model Number | 3121 0400 |
| Number of Packs | 1 |
| Paint Type | Specialty |
| Size | 4 Inch |
| UPC | 077089312171 783961082567 785577089633 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Linzer
- **Brush Width:** 4 inches
- **Color:** Brown
- **Material:** Polyester
- **Size:** 4 Inch

## Images

![Linzer Products 3121-4 4 in. Poly Waterproof Brush - Image 1](https://m.media-amazon.com/images/I/61yXwl-AIHL.jpg)

## Frequently Bought Together

- Linzer 3121 0400 Stain Waterproofing Brush, 4 in.,Brown,WM 3121-0400
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**Shop now:** [https://www.desertcart.com.br/products/28281842-linzer-products-3121-4-4-in-poly-waterproof-brush](https://www.desertcart.com.br/products/28281842-linzer-products-3121-4-4-in-poly-waterproof-brush)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-08-18*